The Trump administration and Health and Human Services Secretary Robert F. Kennedy Jr. are flipping the pyramid upside down.

Genetics play a role in low testosterone for some men, but underlying causes vary widely. Many genes influence testosterone ...

Total testosterone measures the full amount of the hormone in your blood, while free testosterone represents the small, ...

Q. You recently wrote that testosterone does not increase the risk for heart attacks. But you overlooked the real risk of ...

Starting around age 40, many men notice the first physical changes that may be related to their hormone levels: Energy wanes ...

In a recent review published in the Nutrients, a group of authors reviewed the use of natural polyphenolic compounds to enhance testosterone production and prevent age-related hypogonadism in aging ...

Everyone produces testosterone, regardless of sex. Not only is it a pivotal hormone in development (particularly for males) and for masculine characteristics, it's also essential for muscle growth, ...

What used to be a niche treatment for men with legitimate medical conditions has morphed into "youth and vigor" as a ...

For those who need it—men who have low levels of testosterone with symptoms such as low energy, a low libido, and depression, ...

Modern men are facing widespread hormone disruption. Many of the everyday products you use—deodorants, shampoos, body washes—contain harmful chemicals that can interfere with testosterone levels.

Testosterone is a naturally occurring steroid hormone. Despite its status as a steroid, prescription testosterone replacement ...